Carbureter.



J. HARRIS. OARBURETER. APPLIoATIoN FILED JUNE se. moa.

,Patented Apr. 4, 1911 IIN IA '////////////////4 JOHHARRIS, 0FCLEVELAND, OHIO.

CARBURETER.

. Specification of Letters Patent.

Patented Apr. 4-1, 191.1.

Application led June 26, 1908. Serial No. 440,480.

'l'o all whom 'it may concern:

nular ledge 8 preferably cast with Ithe bot- Be it known that I, J oms`Hamas, a cititom 3, such casing being provided with a' rezen of theUnited States, residing :it Cleveland, in the county of Cuyahoga andState of Ohio, have invented a certain new and 'useful Improvement inCarbureters, of which the following isa fullclear, and exactdescription, reference being had to the accompanying drawings.

This invention Vrelates generally to devices for producing a mixture ofair with fluid fuel, and more especially to devices, in the nature ofcarbureters, foi` producing mixtures of air with liquid fuel which is ina vaporous condition.y

VIt has forits general objects to simplify the construction of suchdevices; to provide a mixing device wherein the proportions ofA air andfluid fuel may be maintained con-y stant after the air and fuel portshave been adjusted, but which will allow for the convenient adjustmentof such portsv to vary such proportions when desirable; and to provideaconstruction whereby fluid fue]r may be suppliedunder constant pressureto its p ort but without danger of flooding the devlce.

More limitedly, the subject of this application is an improvement uponthat described in my co-pending application, filed Ma 9th, 1908, SerialN o. 431,774.

till more specifically, the invention consists in certain details ofconstruction which are illustrated in the drawings hereto annexed,wherein- Figure 1 represents a vertical longitudinal y sectional Viewtaken through a carbureter constructed in accordance `with my invention;Fig. 2 represents a. longitudinal sectional view corresponding to theline 2-2 of Fi 1; and Fig. 3 represents a plan view of a detail of thevalve-operating mechanism. Describing the parts by reference characters,1 denotes a casing which is provided at its top with a connect-ion 2 towhich the engine suction pipe may be attached. This casing is rovided atits bottom with a 'plate 3 remove ly fitted to the body of the'casing,as byscrews t which extend through the bottom plate and are threadedinto llugs 5 on the casing. The bottom plate 3 1s provided near one endthereof with an inlet connection 6 through which liquid fuel may besupplied to a float chamber. This cham ber may be conveniently formed bya casing 7 the lower end of which fits within an anmovable cover 9.

1.0 denotes the lfloat, said float carrying an upwardly seating conicalvalve 11 on a valve stem 12. This valve stem extends through a guide 13which is mounted on thebottoni plate above the port. 14 and is rovidedwith a suitable number of lateral ischarge orifices 15.,

Adjacent to the end opposite connection 6, plate 3 is provided with anupwardly pro jeeting hollow boss 16, preferablyl integral therewith, theinterior of which boss coinmunicates with the float chamber 7 by meansof a port 17 extending through the bottoni plate and aA tissage-way 18whichl connects said-port wit the float chamber. The boss 16 has thereinan inverted truste-conical valve seat and is provided with a ort conofan elongated horizonte slot 19.

sistrg 'The ischarge end of this slot is inclosed by a chamber 20. Thischamber extends upwardly to a point above the level of the liquid fuel(indicated at 20") in the float chamber within easing 7 and .is open atits upper end.

21 denotes a valve pluo` which is mounted within the valve chamberformed within the boss 1G. This plug forms a snug fit within'the innersuiface of 16 and is rovided withan internal chamber 22 projecting abovethe port 19. Within this chamber there is mounted a tube 23, the lowerend of which is secured Within the lower end of the chamber, as by meansof a bushing 24:, and the upper end whereof projects above port '19. Theupper end of tube 23 is spaced from 'the plug 21 is provided with anoperatingstern 26 closely fitted within a sleeve 2T which projectsthrough the top of the casing l, forming a close tit therewith.This'sleeve is provided with an annular ledge 28 and a' washer 29,between which there is interposed 25 -I l arm or handle 37 which isrotatably mounta spring 30. The washer 29iffbears against The sleeve 27is provided with a pair of.

arms 3l, which project outwardly and downwardly therefrom, their lowerends fitting between lugs 32 on a rotary valve 33. This valve is in theshape of an annular disk and Y is rotatably mounted between the boss 16`and sleeve 27 to move in unison.

and an annularledge 34 which is preferably integral with the bottomplate 3. The valve is provided with arc-shaped ports 35 adapted toregister'with corresponding ports 36 in the bottom of the casing. Thearc-shaped ports 35 and 36 are so arranged that the air valve will beginto open simultaneously with the opening of the fluid fuel valve and willbe fully opened when the latter valveis also fully opened. j

For the purpose of operating the air and liquid fuel valves, I providean operati-ng ed upon the upper end of sleeve 27. -The upper end ofvalve stem 26 projects above the upper end ofthe sleeve 27 and hasrigidly mounted thereon a segment 38 having an arc-shaped slot 39 bymeans of which an adjustable connection is formed between the valve stem26 and the sleeve 27 through a screw 40, which extends through slot 39and is threaded into 'the handle 37. The `screw 40 is provided with a-shoulder 4:1 which, when thescrew is tightened, bears against thesegment '38 and causes 'stem 26 As stem 26 carries the valve plug 21andsleeve 27 the operating arms for the air valve, it will be apparentthat the air and fuel valves may be conveniently adjusted wheneverdesired and that, after having been so adjusted, they will move inunison.

By the construction herein illustrated and' described, numerousadvantages may be secured. For instancethe liquid fuel supplied throughthe port 19 is under the constant pressure of the head due to the'levelof the liquid in the float chamber 7. At the same time, there is nopossibility of flooding the mixing-chamber formed within the casing land of wasting tlie liquid fuel, owing to the provision of the chamberwhich incloses the discharge end of the slot 19 and extends above thelevel of the liquid in the -loatchamber 7. With this constructiom` thethrottle valve may be left open when it is desired to i crank up andstill -not waste the gasolene. Furthermore, the chamber 20will containjust enough liquid fuelr to prime or start a'multi -cylinder engine.'

The Vair valve construction is particularly simple and efficient. By itsuse, whistling casing lhaving an upwardly projecting valvel seatprovided with a lateral discharge port, a valve rotatably mounted insaid seat and having a port adapted to register with the former port, aoat feed chamber, connections for supplying liquid fuel thereto,connections between said chamber and saidvalve, said float chamber beingarranged to maintain a liquid level above the lateral port in the valveseat, and la vert-ically eX- tending outlet communicating with the latter port and extending above the level of the liquid in the floatchamber.

In a earbureter, the combination of a casing having an upwardlyprojecting valve seat thereimsaid valve seat being provided with aconnection for supplying liquid fuel to the lower portion thereof, saidtalve seat being provided with a port extending through its wall, arotary valve mounted in said valveseat and provided with a 'port adaptedto register with the former port and provided with a chamber extendingup.` wardly from the bottom thereof to a point above the port in thevalve seatysaid cham ber communicating with thelower portion of thevalve seat and with theport in said valve, and connections for supplyingliquid,

fuelto said chamber at apoint above the said ports. w

3. In a carbureter, the combination of a casing having a valveseatprovided with a port and having at its lower end a connection forliquid fuel, a rotary valve in said seat provided with a chamberextending up wardly 'from the bottom there f and with a port adapted toregister with. the former port and communicating with said chamber,

a tube mounted in the lo'we. end of said kchamber and extending abovesaid ports and communicating at its lower end with the lower portion ofthe valve seat, and connections for supplying liquid fuel to the lowerportion of said seat.

4lio

4. In a carbureter, the combination of a4 casing` having a valve setprovided with ay lateral port, a rotary valve in said seat provided witha chamber extendingnpwardly from the bottom 'l thereof and witha portadapted to registerwith the. former port and communicating with saidchamber, a tube mounted in the lower end of said cham valve, anadjustable connection between said ber and extending above said ports,and connections for supplyin f liquid fuel through said tube to saidchamlie and thence to said ports.

5. In a carbureter, the combination of a casing having therein anupwardly projectingvalve seat provided with a lateral port and connectedat its lower portion with a source of fuel supply, a rotary valvemounted in said seat and having an upwardly extending chambercommunicating at its lower end with the supply to the valve seat andextending above the lateral portand provided with a port adapted toregister with the formerport and communicating with lsaid chamber, afloat feed chamber arranged to maintain a liquid level above the top ofthe former chamber, connections between said float feed chamber and thevalve seat, and means for preventing the flooding of the casing throughthe port in the valve seat.

(l. In a carbureter, the combination of a :asing having an upwardlyextending valve seat and one or more segmental air ports locatedadjacent to said seat, a rotary valve in said seat, a stem for saidvalve,asleeve on said stem, a rotary valve surrounding the valve seatandprovided with one or more segmental ports adapted to register withthe first mentioned port or ports, a pair of arms projecting downwardlyfrom said sleeve and engaging the. last mentioned valve, a connectionbetween said stein and said sleeve, and means for supplying fluid fuelto the iirst mentioned valve.

'l'. ln a carburetor, the combination of a casing having in the bottomthereof an upwardly projecting valve seat and having one or more airports in the bottom adjacent to said seat, a rotary valve mounted in thevalve seat and having an operating stem, a, valve surrounding the valveseat and co-acting with the port or ports in the bottom of the casing, asleeve mounted on the valve stem, one or more arms carried by saidsleeve and engaging the last mentioned sleeve and said valve stem, andmeans for suj'ijilyiug fluid fuel to the lirst mentioned valve.

S. In a carburetor, the coi'nbination of a casing having a valve seattherein and provided with one or more air ports in the base thereof, arotary valve mounted in the valve seat and having a stein projectingthrough the casing, a sleeve mounted on said stem and also projectingthrough said casing, a valve having ports cooperating with the ports inthe base of the casing, a connection between said sleeve and the lastmentioned valve, an arm mounted on the sleeve, a Segment mounted on thevalve stem adjacent said sleeve and having an arc-shaped slot casingward y charge outlet,

therethrough, a screw extending through said slot and threaded into saidarm, and

means for supplyingiiuid fuel to the first mentioned valve. v

9. lIn alearbureter, the combination of a having a valve seat projectingupfrom ,the bottom ,thereof and provided adjacent to said seat with oneor more air ports, a valve mounted in said seat and havlng a stemprojectlng u wardly through the casing, a sleeve mounte on said stem, arotary valve coperating with the port or ports in the bottom of thecasing, one or more arms connecting the last-mentioned valve and thesleeve, a ledge on said sleeve, a washer on said sleeve adapted toengage the inner surface of the top of the casing, a spring interposedbetween said ledge and said washer, an adjustable connection betweensaid sleeve and said valve stem located above said casing, and means forsupplying Huid fuel to the first mentioned valve.

10. In a carburetor, the combination of a casing having therein a fluidfuel valve prov vided with a stem projecting through the casing, asleeve mounted on said stern, a rotary air valve, one or more armsconnecting the last-mentioned valve and the sleeve, a

ledge on said sleeve, a washer on said sleeve adapted to engage theinner surface of the casing, a sprmg interposed between said ledge andsaid washenand a connection between said sleeve and said valve stem.

ll. In a carbureter, the combination of a casing having therein anupwardly projecting valve seat provided W1th an elongated lateraldischarge slot, a valve rotatably mounted in said seat and rovided withan elongated dischar e slot a apted to' register with the former s ot, aliquid fuel reservoir communicatingr with said valve and havin means formai itaining therein a liquid lev'e above said slots, a chamberinclosing the discharge slot in the valve seat and extending above themaintained level in the reservoir, and means for supplyin air to saidcasing.

12. In a carbureter, t 1e combination of a casing havin an upwardlyprojecting valve seat provide 'with an elongated lateral disa rotaryvalve in said seat provided with an elongated discharge outlet adaptedto register with the former outlet, a liquid fuel reservoircommunicating with the said valve and having means for maintainingtherein a supply of liquid fuel above said outlets, a chambercommunicating with the outlet. in the valve seat and extending above thelevel of the liquid in said reservoir, an' air valve for controlling theflow of air into said casing, and connections for operating the air andliquid fuel valves m unison. t

13. In a carburetor, the combination of a casing having a. valve seattherein provided with a discharge port, a valve rotatably mounted insaid seat and provided with a port adapted to register with the formerport, a liquid reservoir communicating with said valve seat and providedwith means for maintaining therein a liquid level above said ports, 'achamber communicating with the port in the valve seat .and extendingabove the `level of the liquid in the reservoir, an air valve foradmitting air to said casing and connections for operating the air andthe liquid fuel valves proportlonally.

14. In a earbureter, the combination ofl ai easing having therein avalve comprising-a valve seat provided with an elongated lat eraldischarge outlet and a valve body ro-f tatablyemounted withrespeet ytosaid seatE valve outlet through which the liquid fuel is discharged andextending above the mainltained level in the reservoir, and a valve for.controlling the supply of air to said casing.

taining therein a liquid level extending.

above said outlets, a chamber inelosing the valve outlet through whichthe liquidfuel isdischarged and extending above themaintained level inthe reservoir, and a valve for controlling the supply ofOair to` saidcasing. In testimony whereof, I hereunto affix' my signature in thepresence of two witnesses. JOI-IN HARRIS. l/Vitnesses:

J. B. HULL, BRENNAN B. WEST.

Copies of this patent may be obtained for ve cents each, bv addrs's'ngthe Commissioner of Patents, Washington, D. C. I

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